
//--------------------------删除重复数据--------------------------------
var a = [1,1,2,3,4,5,3,3,4,5,6,7,9,9,1];

	function del (arr){
		for(var i = arr.length-1; i >= 0; i--){
			document.write(arr[i]);
 		}
	}
del(a);
//--------------------------删除重复数据--------------------------------





























